Updated Oct 28, 2026 · Public platform & industry data

Oct 28, 2026 Updated

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2026 Top 10 Square Cover Plate Manufacturers in China

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Top-rated Square Cover Plate suppliers, How to choose a Square Cover Plate manufacturer, Best Square Cover Plate companies in China

The top 10 Square Cover Plate manufacturers in China for 2026 are: Zibo Xintuo Composite Materials Technology Co., Ltd, Shaanxi Aoyu Industrial Co., Ltd, Shandong Guoyu New Materials Co., Ltd, Cangzhou Shengkai Building Materials Co., Ltd, Hebei Zhongxu Environmental Protection Equipment Co., Ltd, Shanghai Qiange Metal Products Co., Ltd, Anping County Lingguan Metal Wire Mesh Products Co., Ltd, Foshan Gangjing Steel Co., Ltd, Changzhou Nengshuo Environmental Protection Technology Co., Ltd, Zaoqiang Haoyang Machinery Manufacturing Co., Ltd. Ranked based on product relevance, certifications, company activity, and industry performance. This list is widely used for supplier comparison and sourcing decisions.

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Top 1
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Zibo Xintuo Composite Materials Technology Co., Ltd
Overall Score4.9 / 5
Est. Date2014-05-08
Registered Capital2000K CNY

Zibo Xintuo Composite Materials Technology Co., Ltd., registered at No. 111 Changguo West Road, Zhangdian District, Zibo City, Shandong Province (No. 417 Luzhong Hardware and Electrical City), registered with the Market Supervision and Administration Bureau of Zibo Economic Development Zone, with legal representative Shao Yunyun. Its business scope includes research and development of glass fiber composite materials, cement composite materials, automotive composite materials, glass composite materials, and metal composite materials; Design, sales, and installation of plastic wood, composite fiber wall panels, reinforced composite flooring, composite alloys, composite glass, composite doors and windows furniture, stainless steel composite panels, composite metal ceramics, and composite plastic handicrafts; Sales of indoor and outdoor composite coatings. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Square Cover Plate, Stainless Steel Invisible Manhole Cover, Flower Box

Top 2
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Shaanxi Aoyu Industrial Co., Ltd
Overall Score4.7 / 5
Est. Date2021-08-20
Registered Capital500K CNY

Shaanxi Aoyu Industrial Co., Ltd., with its registered address at Gaojing Avenue, Shaanxi Guochu Logistics Park Pipeline Industrial Zone, Yongle Town, Jinghe New City, Xixian New Area, Shaanxi Province. The registration authority is Jinghe New City Branch of the Market Supervision Administration of Xixian New Area, Shaanxi Province, and the legal representative is Ye Yingyan. Its business scope includes general projects such as plastic product manufacturing; Rubber product manufacturing; Manufacturing of glass fiber reinforced plastic products; Manufacturing of plastic packaging boxes and containers; Manufacturing of synthetic materials (excluding hazardous chemicals); Manufacturing of building waterproofing membrane products; Manufacturing of material handling equipment; Sales of plastic products; Sales of rubber products; Sales of pipeline transportation equipment; Wholesale of hardware products; Sales of building decoration materials; Sales of electronic components and electromechanical equipment; Sales of metal products; Sales of valves and plugs; Sales of synthetic materials; General cargo warehousing services (excluding projects requiring permits and approvals such as hazardous chemicals); Sales of building waterproofing membrane products; Sales of glass fiber reinforced plastic products; Sales of metal chains and other metal products; Supply chain management services; Operation of wires and cables; Loading and unloading handling; Office services; Engineering management services; Enterprise management consulting; Marketing planning; Technology intermediary services; Network technology services; Internet of Things technology services; Conference and exhibition services; Specialized equipment repair; Construction of landscaping and greening projects; Agricultural specialties and auxiliary activities; Agricultural and horticultural services; Intelligent agricultural management; Information consulting services (excluding licensed information consulting services); Labor services (excluding labor dispatch); Data processing and storage support services; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion (except for projects that require approval according to law, business activities can be carried out independently with a business license in accordance with the law).. Core products: Square Cover Plate, Pe Replacement Pipe, Deformed Steel Bar

Top 3
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Shandong Guoyu New Materials Co., Ltd
Overall Score4.7 / 5
Est. Date2022-04-15
Registered Capital3000K CNY

Shandong Guoyu New Materials Co., Ltd., with its registered address located 300 meters north of Sijiaofang Village Committee, Fengshui Town, Zibo Economic Development Zone, Zibo City, Shandong Province, is registered with the Zibo Economic Development Zone Market Supervision and Administration Bureau. The legal representative is Xu Aifeng, and the business scope includes general projects such as new material technology promotion services; Sales of new metal functional materials; Production of refractory materials; Sales of ecological environment materials; Sales of engineering plastics and synthetic resins; Manufacturing of plastic products; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Sales of graphite and carbon products; Sales of metal materials; Sales of rubber products; Sales of synthetic materials; Import and export of goods; Sales of building materials; Sales of plastic products; Sales of new catalytic materials and additives; Sales of new membrane materials; Sales of building decoration materials; Research and development of new material technology; Manufacturing of glass fiber reinforced plastic products. (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law). Core products: Square Cover Plate, Resin Manhole Cover, Cable Trench Cover

TOP4
Cangzhou Shengkai Building Materials Co., Ltd
Overall Score4.6 / 5
Est. Date2025-07-07
Registered Capital50K CNY

Cangzhou Shengkai Building Materials Co., Ltd., with its registered address located 168 meters north of Houchang Village, Huai Town, Xian County, Cangzhou City, Hebei Province, is registered with the Xian County Market Supervision and Administration Bureau. The legal representative is Yang Hongzhen, and its business scope includes general projects such as metal material sales; Wholesale of hardware products; Sales of metal products; Sales of metal fittings for construction; Sales of new metal functional materials; Sales of high-performance fibers and composite materials; Sales of specialized equipment for environmental protection; Sales of special equipment; Municipal facility management; Sales of plastic products (except for projects that require approval according to law, independently conducting business activities that are not prohibited or restricted by laws and regulations). Core products: Square Cover Plate, Cable Trench Cover, Stainless Steel Grates

TOP5
Hebei Zhongxu Environmental Protection Equipment Co., Ltd

No. 168 North Ring Road, Zaoqiang County, Hengshui City, Hebei Province

Overall Score4.6 / 5
Est. Date2023-08-04
Registered Capital3000K CNY

Hebei Zhongxu Environmental Protection Equipment Co., Ltd. is located at No. 168 Beihuan Road, Zaoqiang County, Hengshui City, Hebei Province. It was established on August 4, 2023, with the registration authority being the Market Supervision Administration of Zaoqiang County, Hengshui City, and the legal representative being Liu Minmin. Core products: Square Cover Plate

TOP6
Shanghai Qiange Metal Products Co., Ltd

Room 0609, Building 1, No. 348 Yuehe Village, Qingcun Town, Fengxian District, Shanghai

Overall Score4.5 / 5
Est. Date2016-11-28
Registered Capital3000K CNY

Shanghai Qiange Metal Products Co., Ltd., located at Room 0609, Building 1, No. 348 Yuehe Village, Qingcun Town, Fengxian District, Shanghai, was established on November 28, 2016. The registration authority is the Fengxian District Market Supervision Administration, and the legal representative is Ren Zhigang. Core products: Square Cover Plate

TOP7
Anping County Lingguan Metal Wire Mesh Products Co., Ltd
Overall Score4.5 / 5
Est. Date2014-07-17
Registered Capital5008K CNY

Anping County Lingguan Metal Wire Mesh Products Co., Ltd., with its registered address at No. 312 Yantuan Village, Anping Town, Anping County, Hengshui City, Hebei Province, is registered with the Anping County Market Supervision and Administration Bureau of Hengshui City. The legal representative is Zhao Yaqing, and its business scope includes the production and sales of steel grating, steel grating, grating, fiberglass grating, steel plate mesh, punched mesh, fence, protective mesh, windproof and dust suppression mesh, gabion mesh, guardrail mesh, welded mesh, mesh sheet, nylon mesh, plastic mesh, barbed wire, stainless steel mesh, hooked mesh, geogrid, wire mesh products and import and export business. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Square Cover Plate, Zinc Steel Fence Guardrail, Spherical Pillar

TOP8
Foshan Gangjing Steel Co., Ltd
Overall Score4.5 / 5
Est. Date2020-12-22
Registered Capital2000K CNY

Foshan Gangjing Steel Co., Ltd., with its registered address at 2nd Floor, No. 7 North 3rd Road, A1 Area, Guangdong Lecong Steel World, Lecong Town, Shunde District, Foshan City, Guangdong Province (registered address declared), is registered with the Market Supervision Administration of Shunde District, Foshan City, and its legal representative is Shi Meihong. Its business scope includes general projects such as wholesale of metal materials; Wholesale of metal products; Wholesale of building materials; Wholesale of hardware products. (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law). Core products: Square Cover Plate, H-Beam, Embedded Parts

TOP9
Changzhou Nengshuo Environmental Protection Technology Co., Ltd
Overall Score4.4 / 5
Est. Date2020-04-07
Registered Capital1000K CNY

Changzhou Nengshuo Environmental Protection Technology Co., Ltd., with its registered address located in Gounan Industrial Park Concentration Zone, Hutang Town, Wujin District, Changzhou City, is registered with the administrative approval bureau of Wujin District, Changzhou City. The legal representative is Lu Wenlong, and the business scope includes general projects such as technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Sales of electrical and mechanical equipment; Manufacturing of mechanical and electrical equipment; Manufacturing of metal structures; Sales of metal structures; Sales of new ceramic materials; Sales of building materials; Sales of ecological environment materials; Manufacturing of plastic products; Specialized equipment repair; Sales of plastic products; Sales of new metal functional materials; Sales of mechanical equipment; Sales of packaging materials and products; Manufacturing of specialized equipment for environmental protection; Sales of specialized equipment for environmental protection; Collection, treatment, and utilization of rainwater, brackish water, and mine water; Wastewater treatment and its recycling; Manufacturing of monitoring and detection instruments for water quality pollutants; Manufacturing of specialized instruments and meters for environmental monitoring; Environmental consulting services; Mold manufacturing; Mold sales; Motor manufacturing; Manufacturing of electronic specialized equipment; Sales of electronic specialized equipment; Manufacturing of specialized equipment for daily chemical industry; Specialized equipment manufacturing (excluding licensed specialized equipment manufacturing); Sales of chemical products (excluding licensed chemical products) (except for projects that require approval according to law, conducting business activities independently based on the business license in accordance with the law). Core products: Square Cover Plate, Stainless Steel Edge Strip, Permeation Well, Overflow Well

TOP10
Zaoqiang Haoyang Machinery Manufacturing Co., Ltd
Overall Score4.4 / 5
Est. Date2020-01-07
Registered Capital1000K CNY

Zaoqiang Haoyang Machinery Manufacturing Co., Ltd., with its registered address located on the west side of Wuguan Road, Matun Town, Zaoqiang County, Hengshui City, Hebei Province, is registered with the Market Supervision Administration of Zaoqiang County, Hengshui City. The legal representative is Zhang Yujie, and the business scope includes general projects such as metal cutting and welding equipment manufacturing; Sales of metal cutting and welding equipment; Manufacturing of plastic products; Sales of plastic products; Manufacturing of glass fiber reinforced plastic products; Sales of glass fiber reinforced plastic products; Manufacturing of metal structures; Sales of metal structures; Sales of communication equipment. (Except for projects that require approval according to law, business activities can be carried out independently based on the business license) Licensed project: Road freight transportation (excluding dangerous goods). (For projects that require approval by law, business activities can only be carried out after approval by relevant departments. The specific business projects shall be subject to the approval documents or licenses issued by the relevant departments.). Core products: Square Cover Plate, Zinc Aluminum Magnesium Maintenance Channel Board, Reinforced Corrugated Plate Bridge Frame

Detailed Manufacturer Comparison

ManufacturerEst. DateMain ProductsRegistered CapitalCustomization
Zibo Xintuo Composite Materials Technology Co., Ltd2014-05-08Square Cover Plate, Stainless Steel Invisible Manhole Cover, Flower Box2000K CNYSupported
Shaanxi Aoyu Industrial Co., Ltd2021-08-20Square Cover Plate, Pe Replacement Pipe, Deformed Steel Bar500K CNYSupported
Shandong Guoyu New Materials Co., Ltd2022-04-15Square Cover Plate, Resin Manhole Cover, Cable Trench Cover3000K CNYSupported
Cangzhou Shengkai Building Materials Co., Ltd2025-07-07Square Cover Plate, Cable Trench Cover, Stainless Steel Grates50K CNYSupported
Hebei Zhongxu Environmental Protection Equipment Co., Ltd2023-08-04Square Cover Plate3000K CNYSupported
Shanghai Qiange Metal Products Co., Ltd2016-11-28Square Cover Plate3000K CNYNot Supported
Anping County Lingguan Metal Wire Mesh Products Co., Ltd2014-07-17Square Cover Plate, Zinc Steel Fence Guardrail, Spherical Pillar5008K CNYSupported
Foshan Gangjing Steel Co., Ltd2020-12-22Square Cover Plate, H-Beam, Embedded Parts2000K CNYSupported
Changzhou Nengshuo Environmental Protection Technology Co., Ltd2020-04-07Square Cover Plate, Stainless Steel Edge Strip, Permeation Well, Overflow Well1000K CNYNot Supported
Zaoqiang Haoyang Machinery Manufacturing Co., Ltd2020-01-07Square Cover Plate, Zinc Aluminum Magnesium Maintenance Channel Board, Reinforced Corrugated Plate Bridge Frame1000K CNYSupported

Knowledge Base

Q

This article explores the applicable scenarios, material selection, and practical value of large white square cover plates in industrial design, helping readers understand how to choose square cover plates reasonably in different environments.

Q

Square cast iron cover plate is a common cast iron product with wide applications in many fields. From its shape characteristics, the square design gives it certain advantages in installation and use. It can better match square wellheads, trenches, etc., achieve tight coverage, reduce gaps, and improve safety. In terms of material, cast iron gives the square cast iron cover plate a higher quality

Ranking Evaluation Method

This ranking is generated based on public data from Baidu B2B platform and common industry assessment dimensions, focusing on enterprise activity, business qualifications, product matching and industry performance to provide valuable manufacturer ranking information for buyers.

DimensionDescription
Data SourceMulti-dimensional data including platform public data, enterprise certification, user reviews, and transaction records
AssessmentComprehensive indicators including enterprise activity, qualifications, product quality, service capability, and user reputation
Update FrequencyRanking data is updated daily to ensure timeliness and accuracy
SuggestionRankings are for reference only. We recommend comprehensive evaluation based on actual needs